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GIMP Script-Fu Script | 2000-12-27 | 4.1 KB | 106 lines |
- ; "Rippling Image" animation generator (ripply-anim.scm)
- ; Adam D. Moss (adam@foxbox.org)
- ; 97/05/18
- ;
- ; Designed to be used in conjunction with a plugin capable
- ; of saving animations (i.e. the GIF plugin).
- ;
-
- (define (copy-layer-ripple dest-image dest-drawable source-image source-drawable)
- (gimp-selection-all dest-image)
- (gimp-edit-clear dest-drawable)
- (gimp-selection-none dest-image)
- (gimp-selection-all source-image)
- (gimp-edit-copy source-drawable)
- (gimp-selection-none source-image)
- (let ((floating-sel (car (gimp-edit-paste dest-drawable FALSE))))
- (gimp-floating-sel-anchor floating-sel)))
-
- (define (script-fu-ripply-anim img drawable displacement num-frames)
- (let* ((old-bg (car (gimp-palette-get-background)))
- (width (car (gimp-drawable-width drawable)))
- (height (car (gimp-drawable-height drawable)))
- (ripple-image (car (gimp-image-new width height GRAY)))
- (ripple-layer (car (gimp-layer-new ripple-image width height GRAY_IMAGE "Ripple Texture" 100 NORMAL))))
-
- ; this script generates its own displacement map
-
- (gimp-image-undo-disable ripple-image)
- (gimp-palette-set-background '(127 127 127) )
- (gimp-image-add-layer ripple-image ripple-layer 0)
- (gimp-edit-fill ripple-layer BG-IMAGE-FILL)
- (plug-in-noisify 1 ripple-image ripple-layer FALSE 1.0 1.0 1.0 0.0)
- ; tile noise
- (set! rippletiled-ret (plug-in-tile 1 ripple-image ripple-layer (* width 3) (* height 3) TRUE))
- (gimp-image-undo-enable ripple-image)
- (gimp-image-delete ripple-image)
-
- (set! rippletiled-image (car rippletiled-ret))
- (set! rippletiled-layer (cadr rippletiled-ret))
- (gimp-image-undo-disable rippletiled-image)
-
- ; process tiled noise into usable displacement map
- (plug-in-gauss-iir 1 rippletiled-image rippletiled-layer 35 TRUE TRUE)
- (gimp-equalize rippletiled-layer TRUE)
- (plug-in-gauss-rle 1 rippletiled-image rippletiled-layer 5 TRUE TRUE)
- (gimp-equalize rippletiled-layer TRUE)
-
- ; displacement map is now in rippletiled-layer of rippletiled-image
-
- ; loop through the desired frames
-
- (set! remaining-frames num-frames)
- (set! xpos (/ width 2))
- (set! ypos (/ height 2))
- (set! xoffset (/ width num-frames))
- (set! yoffset (/ height num-frames))
-
- (let* ((out-imagestack (car (gimp-image-new width height RGB))))
-
- (gimp-image-undo-disable out-imagestack)
-
- (while (> remaining-frames 0)
- (set! dup-image (car (gimp-channel-ops-duplicate rippletiled-image)))
- (gimp-image-undo-disable dup-image)
- (gimp-crop dup-image width height xpos ypos)
-
- (set! layer-name (string-append "Frame "
- (number->string (- num-frames remaining-frames) 10)
- " (replace)"))
- (set! this-layer (car (gimp-layer-new out-imagestack
- width height RGB
- layer-name 100 NORMAL)))
- (gimp-image-add-layer out-imagestack this-layer 0)
-
- (copy-layer-ripple out-imagestack this-layer img drawable)
-
- (set! dup-layer (car (gimp-image-get-active-layer dup-image)))
- (plug-in-displace 1 out-imagestack this-layer
- displacement displacement
- TRUE TRUE dup-layer dup-layer 2)
-
- (gimp-image-undo-enable dup-image)
- (gimp-image-delete dup-image)
-
- (set! remaining-frames (- remaining-frames 1))
- (set! xpos (+ xoffset xpos))
- (set! ypos (+ yoffset ypos)))
-
- (gimp-image-undo-enable rippletiled-image)
- (gimp-image-delete rippletiled-image)
- (gimp-palette-set-background old-bg)
- (gimp-image-undo-enable out-imagestack)
- (gimp-display-new out-imagestack))))
-
- (script-fu-register "script-fu-ripply-anim"
- _"<Image>/Script-Fu/Animators/Rippling..."
- "Ripple any image by creating animation frames as layers"
- "Adam D. Moss (adam@foxbox.org)"
- "Adam D. Moss"
- "1997"
- "RGB* GRAY*"
- SF-IMAGE "Image to Animage" 0
- SF-DRAWABLE "Drawable to Animate" 0
- SF-ADJUSTMENT _"Rippling Strength" '(3 0 256 1 10 1 0)
- SF-ADJUSTMENT _"Number of Frames" '(15 0 256 1 10 0 1))
-